| /* |
| * mix.c |
| * |
| * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include "rsnd.h" |
| |
| #define MIX_NAME_SIZE 16 |
| #define MIX_NAME "mix" |
| |
| struct rsnd_mix { |
| struct rsnd_mod mod; |
| }; |
| |
| #define rsnd_mix_get(priv, id) ((struct rsnd_mix *)(priv->mix) + id) |
| #define rsnd_mix_nr(priv) ((priv)->mix_nr) |
| #define for_each_rsnd_mix(pos, priv, i) \ |
| for ((i) = 0; \ |
| ((i) < rsnd_mix_nr(priv)) && \ |
| ((pos) = (struct rsnd_mix *)(priv)->mix + i); \ |
| i++) |
| |
| static void rsnd_mix_activation(struct rsnd_mod *mod) |
| { |
| rsnd_mod_write(mod, MIX_SWRSR, 0); |
| rsnd_mod_write(mod, MIX_SWRSR, 1); |
| } |
| |
| static void rsnd_mix_halt(struct rsnd_mod *mod) |
| { |
| rsnd_mod_write(mod, MIX_MIXIR, 1); |
| rsnd_mod_write(mod, MIX_SWRSR, 0); |
| } |
| |
| static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io, |
| struct rsnd_mod *mod) |
| { |
| rsnd_mod_write(mod, MIX_MDBAR, 0); |
| rsnd_mod_write(mod, MIX_MDBBR, 0); |
| rsnd_mod_write(mod, MIX_MDBCR, 0); |
| rsnd_mod_write(mod, MIX_MDBDR, 0); |
| } |
| |
| static void rsnd_mix_volume_init(struct rsnd_dai_stream *io, |
| struct rsnd_mod *mod) |
| { |
| rsnd_mod_write(mod, MIX_MIXIR, 1); |
| |
| /* General Information */ |
| rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io)); |
| |
| /* volume step */ |
| rsnd_mod_write(mod, MIX_MIXMR, 0); |
| rsnd_mod_write(mod, MIX_MVPDR, 0); |
| |
| /* common volume parameter */ |
| rsnd_mix_volume_parameter(io, mod); |
| |
| rsnd_mod_write(mod, MIX_MIXIR, 0); |
| } |
| |
| static void rsnd_mix_volume_update(struct rsnd_dai_stream *io, |
| struct rsnd_mod *mod) |
| { |
| /* Disable MIX dB setting */ |
| rsnd_mod_write(mod, MIX_MDBER, 0); |
| |
| /* common volume parameter */ |
| rsnd_mix_volume_parameter(io, mod); |
| |
| /* Enable MIX dB setting */ |
| rsnd_mod_write(mod, MIX_MDBER, 1); |
| } |
| |
| static int rsnd_mix_probe_(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io, |
| struct rsnd_priv *priv) |
| { |
| return rsnd_cmd_attach(io, rsnd_mod_id(mod)); |
| } |
| |
| static int rsnd_mix_init(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io, |
| struct rsnd_priv *priv) |
| { |
| rsnd_mod_power_on(mod); |
| |
| rsnd_mix_activation(mod); |
| |
| rsnd_mix_volume_init(io, mod); |
| |
| rsnd_mix_volume_update(io, mod); |
| |
| return 0; |
| } |
| |
| static int rsnd_mix_quit(struct rsnd_mod *mod, |
| struct rsnd_dai_stream *io, |
| struct rsnd_priv *priv) |
| { |
| rsnd_mix_halt(mod); |
| |
| rsnd_mod_power_off(mod); |
| |
| return 0; |
| } |
| |
| static struct rsnd_mod_ops rsnd_mix_ops = { |
| .name = MIX_NAME, |
| .probe = rsnd_mix_probe_, |
| .init = rsnd_mix_init, |
| .quit = rsnd_mix_quit, |
| }; |
| |
| struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id) |
| { |
| if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv))) |
| id = 0; |
| |
| return rsnd_mod_get(rsnd_mix_get(priv, id)); |
| } |
| |
| int rsnd_mix_probe(struct rsnd_priv *priv) |
| { |
| struct device_node *node; |
| struct device_node *np; |
| struct device *dev = rsnd_priv_to_dev(priv); |
| struct rsnd_mix *mix; |
| struct clk *clk; |
| char name[MIX_NAME_SIZE]; |
| int i, nr, ret; |
| |
| /* This driver doesn't support Gen1 at this point */ |
| if (rsnd_is_gen1(priv)) |
| return 0; |
| |
| node = rsnd_mix_of_node(priv); |
| if (!node) |
| return 0; /* not used is not error */ |
| |
| nr = of_get_child_count(node); |
| if (!nr) { |
| ret = -EINVAL; |
| goto rsnd_mix_probe_done; |
| } |
| |
| mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL); |
| if (!mix) { |
| ret = -ENOMEM; |
| goto rsnd_mix_probe_done; |
| } |
| |
| priv->mix_nr = nr; |
| priv->mix = mix; |
| |
| i = 0; |
| ret = 0; |
| for_each_child_of_node(node, np) { |
| mix = rsnd_mix_get(priv, i); |
| |
| snprintf(name, MIX_NAME_SIZE, "%s.%d", |
| MIX_NAME, i); |
| |
| clk = devm_clk_get(dev, name); |
| if (IS_ERR(clk)) { |
| ret = PTR_ERR(clk); |
| goto rsnd_mix_probe_done; |
| } |
| |
| ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops, |
| clk, rsnd_mod_get_status, RSND_MOD_MIX, i); |
| if (ret) |
| goto rsnd_mix_probe_done; |
| |
| i++; |
| } |
| |
| rsnd_mix_probe_done: |
| of_node_put(node); |
| |
| return ret; |
| } |
| |
| void rsnd_mix_remove(struct rsnd_priv *priv) |
| { |
| struct rsnd_mix *mix; |
| int i; |
| |
| for_each_rsnd_mix(mix, priv, i) { |
| rsnd_mod_quit(rsnd_mod_get(mix)); |
| } |
| } |